Ketchum, ID population, income and ZIP codes

Ketchum city is a small town in Idaho, with 3,551 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #44 of 236 ranked by population — larger than 81% of them. The median age here is 54 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Ketchum city earn a median of $87,658 a year, 11.6% above the national figure of $78,538 and 37% above the $63,864 median for the 100 Idaho cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 6.2% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Ketchum city is valued at $756,200, 149.2% above the national figure and 179% above the $271,500 peer median, while median gross rent runs $1,190 a month, 15.4% below the national figure, or roughly $14,280 across a full year. A household on the local median income would put about 16.3% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 8.6×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 75.5% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

Home values sit at 8.6× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere. A median age of 54 puts Ketchum city well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.